Z-Out
Platform: Amiga 500
Region: Europe
Media: Floppy
Controller: Joystick
Genre: Shoot 'em Up - Side-Scrolling - Sci-Fi
Gametype: Licensed
Release Year: 1991
Developer: Advantec Software
Publisher: Rainbow Arts Software GmbH
Players: 1 or 2, Simultaneous
Hardware: OCS, ECS
Conversions: Atari ST
Disks: 1
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NOTE: For simultaneous playing with 2 players, either press F2 at the intro screen or the fire button of joystick in port 1.

Like its predecessor X-Out, Z-Out is a side-scrolling shoot 'em up. A horde of largely-organic enemies threaten the safety of your planet, and they must be destroyed over the course of six levels.There are power-ups available, but the game is less centered around these than some are. 

Whilst some shoot 'em ups are much easier with a second player, Z-Out takes design steps to legislate against this. In a 2-player game, most power-ups are unavailable, and even those which are only come into effect on level 3. Another variation is that the 1-player mode uses restart points, but the 2-player mode does not, so as to keep both players in the same place.
 
http://www.mobygames.com/game/amiga/z-out
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CHEATS:

Cheat mode:
Enter one of the following codes during game play to
activate the corresponding cheat function.

Effect: Code

Level select: Hold J and press 1 to 8

Stage select: [Keypad 1] to [Keypad 3]

Unlimited lives: J + K
